Add support for ICNT86 chip for Touchscreen

[Minikea]

Describe the component you'd like

ICNT86 is a touchscreen chip, similar to the GT1151 and maybe the GT911 already supported.
I don't know if this may be a GT911 enhancement or a brand new component.
I did not find any custom or external component that support this chip.

What are your use cases for this component?

it's a touchscreen built-in with the display of two Waveshare e-ink screens :
2.9inch Touch e-Paper HAT for Raspberry Pi
2.9inch EPD Module for Raspberry Pi Pico

Is there a public datasheet, documentation and/or schematics?

a C driver is available at https://github.com/waveshareteam/Touch_e-Paper_HAT/tree/main/c/lib/Driver for ICNT86 (and GT1151)
a python driver is available on the same repo: https://github.com/waveshareteam/Touch_e-Paper_HAT/blob/main/python/lib/TP_lib/icnt86.py
It uses I2C (currently broken with the 2025.8.3 version but working with 2025.7.1 see #3309 ) at 0x48 address.
schematics : https://files.waveshare.com/upload/3/31/2.9inch_Touch_e-Paper_HAT.pdf

Anything else?

No response